Engine JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual

C103 (GAS) - GRAY (RIGHT HEADLAMP AND DASH SIDE)
CAV CIRCUIT
1 F22 20WT/PK (EXCEPT 4.7L RHD)
1 F22 18WT/TN (4.7L RHD)
2 T6 18OR/WT (4.7L LHD)
2 C18 20DB (4.0L LHD BUILT-UP-EXPORT)
2 C18 18DB (4.0L EXCEPT BUILT-UP-EXPORT)
3 D20 20LG (4.7L LHD)
3 D20 18LG (4.7L RHD)
4 D21 20PK (4.7L LHD)
4 K299 18BR/WT (4.0L LHD)
4 D21 18PK (4.7L RHD)
5 B22 18DG/YL (LHD)
6 K20 18DG
7 K30 20PK (4.0L RHD)
7 K30 18PK/YL (4.7L RHD)
7 K30 20PK/YL (LHD)
8 A142 14DG/OR (4.0L LHD)
8 T10 18DG/LG (4.7L LHD)
9 T16 14RD (4.7L LHD)
10 D25 18VT/YL (4.7L RHD)
10 D25 18VT/YL (4.7L EXCEPT BUILT-UP-EXPORT)
10 D25 20VT/YL (4.7L LHD BUILT-UP-EXPORT)
11 Z305 20BK/OR
12 F45 18YL/RD (4.7L RHD)
12 T15 18YL/BR (4.0L)
12 F45 18YL/RD (4.7L EXCEPT BUILT-UP-EXPORT)
12 F45 20YL/RD (4.7L LHD BUILT-UP-EXPORT)
13 K6 18VT/BK (4.0L LHD)
14 F142 18OR/DG
C103 (GAS) - GRAY (ENGINE SIDE)
CAV CIRCUIT
1 F22 18WT/PK
2 C18 18DB (4.0L LHD)
2 K200 18VT/OR (4.7L RHD)
3 K99 18BR/OR (4.0L LHD)
3 D20 18LG (4.7L RHD)
4 K299 18BR/WT (4.0L BUILT-UP-EXPORT)
4 D21 18PK (4.7L RHD)
5 B22 18DG/YL (4.0L LHD)
6 K20 18DG
7 K30 18PK/YL
8 A142 14DG/OR (4.0L LHD)
9 T16 14RD (4.7L)
10 D25 18WT/VT (4.7L)
11 Z305 20BK/OR
12 T15 18LG (4.0L LHD)
12 F45 18YL/RD (4.7L)
13 K6 18VT/BK (4.0L LHD)
13 K199 18DB/WT (4.7L LHD)
14 F142 18OR/DG
8W - 80 - 16 8W-80 CONNECTOR PIN-OUTWJ

C104 - LT. GRAY (RIGHT HEADLAMP AND DASH SIDE)
CAV CIRCUIT
1 K200 18VT/OR (4.0L EXCEPT BUILT-UP-EXPORT)
1 K4 18BK/LB (4.7L HIGH OUTPUT)
2 K99 18BR/OR (4.7L)
2 F991 20OR/DB (4.0L)
3 K173 18LG (4.0L)
4 F42 18DG/LG (4.0L)
5 A7 14RD/BK (4.0L)
5 K4 18BK/LB (4.7L HIGH OUTPUT)
6 L1 18VT/BK (4.0L)
6 K142 18GY/BK (4.7L HIGH OUTPUT)
7 Z306 20BK/LG (4.0L)
7 K299 18BR/WT (4.7L)
8 C18 18DB (4.7L)
8 T41 18BK/WT (4.0L)
9 K6 18VT/BK (4.7L)
9 C2 18DB/YL (4.0L)
10 K4 18BK/LB (4.0L)
10 K42 18DB/LG (4.7L HIGH OUTPUT)
C104 - LT. GRAY (ENGINE SIDE)
CAV CIRCUIT
1 K200 18VT/OR (EXCEPT 4.0L BUILT-UP-EXPORT)
2 F991 18OR/DB
3 K173 18LG
4 F42 18DG/LG
5 A7 14RD/BK
6 L1 18VT/BK
7 Z306 20BK/LG
8 T41 18BK/WT
9 C2 18DB/YL
10 K4 18BK/LB
C105 (DIESEL) - GRAY (LEFT HEADLAMP AND DASH SIDE)
CAV CIRCUIT
1 C13 18DB/OR
2 F300 18RD/BK
3 V37 18RD/LG
4 Z305 20BK/OR
5 Z306 20BK/LG
6 L1 18VT/BK
7-
8-
9-
10 -
11 -
12 -
13 -
14 -
WJ8W-80 CONNECTOR PIN-OUT 8W - 80 - 17

C105 (DIESEL) - GRAY (ENGINE SIDE)
CAV CIRCUIT
1 C13 20DB/RD
2 F300 20RD/BK
3 V37 20RD/DG
4 Z305 18BK/DB
5 Z306 18BK/DB
6-
7-
8-
9-
10 -
11 -
12 -
13 -
14 -
C106 (DIESEL) - GRAY (BODY SIDE)
CAV CIRCUIT
A B10 14BR/WT (LHD)
B-
C-
D-
E-
F-
G-
H-
J-
K-
L-
M B29 14DG/OR
1 F15 20DB/WT
2-
3 G31 20VT/LG
4 G32 20DB/OR (RHD)
4 G32 20BK/LB (LHD)
5 G18 20PK/BK
6-
7-
8 F12 20DB/WT (LHD)
9-
10 Z231 18BK (RHD)
11 K4 20BK/LB (LHD)
11 G9 18GY/BK (RHD)
12 K6 18VT/WT (LHD)
13 -
14 -
15 -
16 K173 18LG
17 -
18 X2 18DG/RD
19 C18 18DB (LHD)
20 Y42 18OR/DB
21 -
8W - 80 - 18 8W-80 CONNECTOR PIN-OUTWJ

C107 (GAS) - GRAY/RHD BLACK/LHD (LEFT
HEADLAMP AND DASH SIDE)
CAV CIRCUIT
39 K31 18BR (RHD)
40 K29 18WT/PK (RHD)
41 K125 18WT/DB (RHD)
42 V32 18OR/DG (RHD)
43 R47 18DB/LB (RHD)
44 V35 18LG/RD (RHD)
45 B22 18DG/YL (LHD)
45 V36 18TN/RD (RHD)
46 C13 18DB/OR (RHD)
47 L13 18BR/YL (RHD)
48 D25 18VT/YL
49 D21 18PK (RHD)
50 R49 18LB (RHD)
51 -
52 -
53 L7 20BK/YL
54 L61 20TN/LG
55 -
56 V20 18BK/WT
57 L39 20LB
58 -
59 L43 18VT
60 L33 18RD
C108 - BLACK (LEFT HEADLAMP AND DASH
SIDE)
CAV CIRCUIT
1 M1 20PK (BUILT-UP-EXPORT)
1 M1 20PK/RD (EXCEPT
BUILT-UP-EXPORT)
2 Z141 20BK
C108 - BLACK (UNDERHOOD LAMP SIDE)
CAV CIRCUIT
1 M1 20PK/RD
2 Z141 20BK
C109 - BLACK (ENGINE SIDE)
CAV CIRCUIT
1 K77 18LG/BK
2 K4 18BK/LB
WJ8W-80 CONNECTOR PIN-OUT 8W - 80 - 33

C112 - BLACK (RIGHT HEADLAMP AND DASH
SIDE)
CAV CIRCUIT
1 L34 18RD/OR
2 L44 18VT/RD
3 L60 20TN
4 L7 20BK/YL
5 L13 18BR/YL (BUILT-UP-EXPORT)
6 Z142 18BK
C112 - BLACK (RIGHT FRONT LIGHTING
MODULE SIDE)
CAV CIRCUIT
1 L34 18RD/OR
2 L44 18VT/RD
3 L60 20TN
4 L7 20BK/YL
5 L13 18BR/YL (BUILT-UP-EXPORT)
6 Z142 18BK
C113 (DIESEL) - LT. GRAY (ENGINE SIDE)
CAV CIRCUIT
1 D51 16WT
2 D52 16DG/WT
C113 (DIESEL) - LT. GRAY (TRANSMISSION
SIDE)
CAV CIRCUIT
1 D52 18LG/WT
2 D51 18DG/WT
WJ8W-80 CONNECTOR PIN-OUT 8W - 80 - 35

ENGINE CONTROL MODULE C1 (DIESEL) - BLACK 81 WAY
CAV CIRCUIT FUNCTION
1 Z108 14BK/DG GROUND
2 Z108 14BK/DG GROUND
3 K20 14DB GENERATOR FIELD CONTROL
4 F142 14RD/DG FUSED AUTO SHUT DOWN RELAY OUTPUT
5 F142 14RD/DG FUSED AUTO SHUT DOWN RELAY OUTPUT
6 D52 18DG/WT CAN C BUS(+)
7 D25 20VT/YL PCI BUS
8 K944 20BR/DG CAMSHAFT POSITION SENSOR GROUND
9 K44 20YL/GY CAMSHAFT POSITION SENSOR SIGNAL
10 - -
11 Y53 20BK/YL BOOST PRESSURE SENSOR SIGNAL
12 K155 20YL/WT MASS AIR FLOW SENSOR SIGNAL
13 Y40 20DG/VT FUEL PRESSURE SENSOR SIGNAL
14 K22 20RD/DB ACCELERATOR PEDAL POSITION SENSOR 2 SIGNAL
15 K81 20DB/DG ACCELERATOR PEDAL POSITION SENSOR 1 SIGNAL
16 Y100 20BR/GY FUEL PRESSURE SENSOR GROUND
17 - -
18 - -
19 F300 20RD/BK BATTERY SENSE (+)
20 Z11 20BK/WT BATTERY SENSE (-)
21 K4 18BK/LB SENSOR GROUND
22 F991 20RD/DB FUSED IGNITION SWITCH OUTPUT (RUN-START)
23 K6 18VT/WT SENSOR REFERENCE VOLTAGE B
24 K3 20BK CRANKSHAFT POSITION SENSOR SIGNAL 1
25 D51 18WT CAN C BUS(-)
26 - -
27 - -
28 - -
29 K77 20BR/WT TRANSFER CASE POSITION SENSOR INPUT
30 G60 20BR/DB ENGINE OIL PRESSURE SENSOR SIGNAL
31 - -
32 K25 20VT/DG BATTERY TEMPERATURE SENSOR SIGNAL
33 - -
34 K255 20WT/DG ACCELERATOR PEDAL POSITION SENSOR 1 GROUND
35 Y43 20WT/VT ACCELERATOR PEDAL POSITION SENSOR 1 5-VOLT
SUPPLY
36 C18 20DB A/C PRESSURE SENSOR SIGNAL
37 - -
38 V37 20RD/DG SPEED CONTROL SWITCH SIGNAL
39 K226 20DB/WT FUEL LEVEL SENSOR SIGNAL
40 K2 20DG/RD ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
41 K21 20DG/WT INTAKE AIR TEMPERATURE SENSOR SIGNAL
42 Y101 20 CRANKSHAFT POSITION SENSOR SHIELD
43 K924 20YL CRANKSHAFT POSITION SENSOR SIGNAL 2
44 - -
45 - -
46 - -
47 L50 20WT/DB PRIMARY BRAKE SWITCH SIGNAL
48 K29 20WT/PK SECONDARY BRAKE SWITCH SIGNAL
49 - -
50 F855 18BR/YL SENSOR REFERENCE VOLTAGE A
51 - -
52 - -
53 - -
54 Z189 20BR MASS AIR FLOW SENSOR GROUND
WJ8W-80 CONNECTOR PIN-OUT 8W - 80 - 75

ENGINE CONTROL MODULE C1 (DIESEL) - BLACK 81 WAY
CAV CIRCUIT FUNCTION
55 B22 20DG/YL VEHICLE SPEED SENSOR SIGNAL
56 K225 18BK ACCELERATOR PEDAL POSITION SENSOR 2 GROUND
57 - -
58 K4 20BK/LB WATER IN FUEL SENSOR GROUND
59 K900 18GY INTAKE PORT SWIRL ACTUATOR SIGNAL
60 K7 20RD/WT FUEL PRESSURE SENSOR 5 VOLT SUPPLY
61 K51 20DB/YL AUTO SHUT DOWN RELAY CONTROL
62 - -
63 - -
64 - -
65 - -
66 - -
67 K173 20GY HYDRAULIC RADIATOR FAN SOLENOID CONTROL
68 - -
69 C13 20DB/RD A/C COMPRESSOR CLUTCH RELAY CONTROL
70 - -
71 - -
72 K236 20GY/PK GLOW PLUG RELAY NO. 2 CONTROL
73 - -
74 T752 20DG/RD ENGINE STARTER MOTOR RELAY CONTROL
75 K132 20BR/BK VISCOUS/CABIN HEATER RELAY CONTROL
76 Y42 20BR/BK WASTEGATE SOLENOID CONTROL
77 K152 20WT GLOW PLUG RELAY NO. 1 CONTROL
78 - -
79 - -
80 K46 20DB/BK FUEL PRESSURE SOLENOID CONTROL
81 K46 20DB/BK FUEL PRESSURE SOLENOID CONTROL
ENGINE CONTROL MODULE C2 (DIESEL) - BLACK 40 WAY
CAV CIRCUIT FUNCTION
82 D21 20PK SCI TRANSMIT
83 - -
84 - -
85 - -
86 - -
87 - -
88 - -
89 K35 20GY/YL EGR SOLENOID CONTROL
90 - -
91 - -
92 - -
93 - -
94 G123 20DG/WT WATER IN FUEL SENSOR SIGNAL
95 - -
96 - -
97 - -
98 - -
99 - -
100 - -
101 - -
102 - -
103 - -
104 - -
8W - 80 - 76 8W-80 CONNECTOR PIN-OUTWJ

ENGINE CONTROL MODULE C2 (DIESEL) - BLACK 40 WAY
CAV CIRCUIT FUNCTION
105 - -
106 - -
107 - -
108 - -
109 - -
110 - -
111 - -
112 T41 20BK/WT PARK/NEUTRAL POSITION SWITCH SENSE (T41)
113 - -
114 - -
115 K14 14BK/YL FUEL INJECTOR NO. 4 CONTROL
116 K63 14BK COMMON INJECTOR DRIVER
117 - -
118 K11 14BK/DB FUEL INJECTOR NO. 1 CONTROL
119 K38 14BK/DG FUEL INJECTOR NO. 5 CONTROL
120 K12 14BK/VT FUEL INJECTOR NO. 2 CONTROL
121 K13 14BK/RD FUEL INJECTOR NO. 3 CONTROL
ENGINE COOLANT TEMPERATURE SENSOR (DIESEL) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K4 20BK/LB SENSOR GROUND
2 K2 20DG/RD ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
ENGINE COOLANT TEMPERATURE SENSOR (GAS) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K4 18BK/LB SENSOR GROUND
2 K2 18TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
ENGINE OIL PRESSURE SENSOR (DIESEL) - BLACK 3 WAY
CAV CIRCUIT FUNCTION
1 K6 18VT/WT SENSOR REFERENCE VOLTAGE B
2 G60 20BR/DB ENGINE OIL PRESSURE SENSOR SIGNAL
3 K4 18BK/LB SENSOR GROUND
WJ8W-80 CONNECTOR PIN-OUT 8W - 80 - 77

ENGINE OIL PRESSURE SENSOR (GAS) - BLACK 3 WAY
CAV CIRCUIT FUNCTION
1 K6 18VT/BK 5 VOLT SUPPLY
2 G60 18GY/YL ENGINE OIL PRESSURE SENSOR SIGNAL
3 K4 18BK/LB SENSOR GROUND
EVAP/PURGE SOLENOID (GAS) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 F12 20DB/WT FUSED IGNITION SWITCH OUTPUT (RUN-START)
2 K52 18PK/BK (RHD) DUTY CYCLE EVAP/PURGE SOLENOID CONTROL
2 K52 20PK/BK (LHD) DUTY CYCLE EVAP/PURGE SOLENOID CONTROL
FRONT POWER OUTLET - RED 3 WAY
CAV CIRCUIT FUNCTION
1 F85 16VT (RHD) FUSED B(+)
1 F85 16VT/WT (LHD) FUSED B(+)
2- -
3 Z300 16BK GROUND
FRONT WASHER PUMP - WHITE 2 WAY
CAV CIRCUIT FUNCTION
1 V10 20BR WASHER PUMP SWITCH SENSE
2 Z141 20BK GROUND
FRONT WIPER MOTOR - BLACK 6 WAY
CAV CIRCUIT FUNCTION
1 V6 16DB FUSED IGNITION SWITCH OUTPUT (RUN-ACC)
2 V55 16TN/RD WIPER PARK SWITCH SENSE
3- -
4 Z141 16BK GROUND
5 V3 16BR/WT WIPER HIGH/LOW RELAY LOW SPEED OUTPUT
6 V4 16RD/YL WIPER HIGH/LOW RELAY HIGH SPEED OUTPUT
8W - 80 - 78 8W-80 CONNECTOR PIN-OUTWJ

POWER CONNECTOR - WHITE 2 WAY
CAV CIRCUIT FUNCTION
1 F85 16VT/WT FUSED B(+)
2 Z234 16BK GROUND
POWERTRAIN CONTROL MODULE C1 (GAS) - BLACK 32 WAY
CAV CIRCUIT FUNCTION
1 K93 14TN/OR COIL DRIVER NO. 3
2 F991 18OR/DB FUSED IGNITION SWITCH OUTPUT (RUN-START)
3 K94 14TN/LG (4.7L) COIL DRIVER NO. 4
4 K4 18BK/LB SENSOR GROUND
5 K96 14TN/LB (4.7L) COIL DRIVER NO. 6
6 T41 18BK/WT PARK/NEUTRAL POSITION SWITCH SENSE (T41)
7 K91 14TN/RD COIL DRIVER NO. 1
8 K24 18GY/BK CRANKSHAFT POSITION SENSOR SIGNAL
9 K98 14LB/RD (4.7L) COIL DRIVER NO. 8
10 K60 18YL/BK IDLE AIR CONTROL NO. 2 DRIVER
11 K40 18BR/WT IDLE AIR CONTROL NO. 3 DRIVER
12 - -
13 - -
14 K77 18LG/BK TRANSFER CASE POSITION SENSOR INPUT
15 K21 18BK/RD INTAKE AIR TEMPERATURE SENSOR SIGNAL
16 K2 18TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
17 K7 18OR 5 VOLT SUPPLY
18 K44 18TN/YL CAMSHAFT POSITION SENSOR SIGNAL
19 K39 18GY/BK IDLE AIR CONTROL NO. 1 DRIVER
20 K59 18VT/BK IDLE AIR CONTROL NO. 4 DRIVER
21 K95 14TN/DG (4.7L) COIL DRIVER NO. 5
22 A7 14RD/BK FUSED B(+)
23 K22 18OR/RD THROTTLE POSITION SENSOR SIGNAL
24 K41 18BK/DG OXYGEN SENSOR 1/1 SIGNAL
25 K141 18TN/WT OXYGEN SENSOR 1/2 SIGNAL
26 K241 18LG/RD (EXCEPT 4.0L
BUILT-UP-EXPORT)OXYGEN SENSOR 2/1 SIGNAL
27 K1 18DG/RD MAP SENSOR SIGNAL
28 - -
29 K341 18TN/WT (4.0L EXCEPT
BUILT-UP-EXPORT)OXYGEN SENSOR 2/2 SIGNAL
29 K341 18PK/WT (4.7L) OXYGEN SENSOR 2/2 SIGNAL
30 - -
31 Z82 14BK/WT GROUND
32 Z81 14BK/TN GROUND
8W - 80 - 108 8W-80 CONNECTOR PIN-OUTWJ